In this day and age of Lean Startups, and Agile being the standard, I've seen small and fast teams try out various tools and finally land up with Post-its and Google Docs to manage the tasks internally. Why? Because every other tool that exists out there, demands having to feed it in a way that it understands.

Tools that can help teams keep everyone updated on what they are upto, without standing in their way and adding to "documentation hell", would be a boon.